EP3343045B1 - Luftgebläse und klimaanlage damit - Google Patents

Luftgebläse und klimaanlage damit Download PDF

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Publication number
EP3343045B1
EP3343045B1 EP16870925.1A EP16870925A EP3343045B1 EP 3343045 B1 EP3343045 B1 EP 3343045B1 EP 16870925 A EP16870925 A EP 16870925A EP 3343045 B1 EP3343045 B1 EP 3343045B1
Authority
EP
European Patent Office
Prior art keywords
blower fan
trailing edge
uneven part
recessed
tail wing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16870925.1A
Other languages
English (en)
French (fr)
Other versions
EP3343045A4 (de
EP3343045A1 (de
Inventor
Byung-ghun KIM
Keun-jeong JANG
Yong-Ho Seo
Hyeong-Joon Seo
Eun-sung JO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP3343045A1 publication Critical patent/EP3343045A1/de
Publication of EP3343045A4 publication Critical patent/EP3343045A4/de
Application granted granted Critical
Publication of EP3343045B1 publication Critical patent/EP3343045B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/307—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the tip of a rotor blade

Definitions

  • the present disclosure relates to a blower fan and an air conditioner having the same, and more particularly, to a blower fan capable of reducing blowing noise and power consumption due to an operation of a propeller fan and an air conditioner having the same.
  • Air conditioner is an apparatus which keeps indoor air fresh to be suitable for human activity using a refrigeration cycle.
  • the air conditioner cools the room through a repetitive operation which sucks hot air in a room, heat-exchanges the hot air into a low-temperature refrigerant, and discharges the refrigerant to the room.
  • the air conditioners may heat the room through the reverse operation to the repetitive operation.
  • the air conditioner may cool or heat the room through a cooling cycle in which the air circulates in a compressor, a condenser, an expansion valve, and an evaporator in the forward or reverse direction.
  • the compressor provides the high-temperature and high-pressure gaseous refrigerant and the condenser provides the room-temperature and high-pressure liquid refrigerant.
  • the expansion value reduces the pressure of the room-temperature and high-pressure liquid refrigerant and the evaporator evaporates the pressure- reduced refrigerant to a low-temperature gas state.
  • the air conditioners may be divided into a separate type air conditioner in which an outdoor unit and an indoor unit are separated from each other and an integrated type air conditioner in which the indoor unit and the outdoor unit are integrally installed.
  • the compressor and the condenser are provided in the outdoor unit and the evaporator (indoor heat exchanger) is provided in the indoor unit.
  • the refrigerant circulates and flows in the outdoor unit and the indoor unit via a pipe which couples the indoor unit and the outdoor unit.
  • the outdoor unit in the separate type air conditioner includes the compressor, the condenser, a blower fan, a driving motor which rotates the blower fan, and the like.
  • the driving motor rotates the blower fan, condenses the refrigerant to a liquid state through heat exchange with the gaseous refrigerant flowing inside the condenser of the outdoor unit, and discharges the condensed refrigerant to the outside.
  • EP 2 607 714 A2 discloses a propeller fan for a heat source unit which is provided with a plurality of blades fixed to a hub on a rotation axis of the fan, in which each of the blades has a recess portion formed in a blade rear edge section, in fan rotating direction, as air blow-out portion during rotation of the fan, and the recess portions of the respective blades are recessed in a direction opposite to air blow-out direction and are different in sizes thereof.
  • CN 2009/40604 Y discloses an air conditioner axial flow fan comprising a fan blade, wherein the edge of the fan blade is provided with sawteeth such that the surface laminar flow of the blade is turned into turbulent flow and the generation of the resonance amplification wave is avoided.
  • CN 202 833 299 U discloses an axial flow wind turbine including a hub and four blades arranged on the hub, wherein the trailing edge area of the blades is recessed towards the intake direction of the leading edge of the blade.
  • CN 204 572 556 U discloses an axial flow wind wheel of an air conditioner including a hub and a plurality of blades, wherein the plurality of blades are connected to the outer side wall of the hub and are evenly distributed along the circumferential direction of the hub and the leading edges of the blades.
  • the object of the present disclosure is to provide a blower fan capable of reducing blowing noise and power consumption and an air conditioner having the same.
  • a blower fan is provided as defined in the appended claims.
  • a position P1 of the tail wing part may be located in a section 0.85 ⁇ D ⁇ P1 ⁇ D on the basis of a maximum straight distance D of the wing from a center C of the hub.
  • a position P2 of the uneven part may be located in the section 0.5 ⁇ D ⁇ P2 ⁇ 0.9 ⁇ D.
  • the uneven part may be located from an inner end of the tail wing part toward the center C of the hub by an interval of 0.01 ⁇ D or less.
  • the tail wing part may have an inclined portion which is coupled to an inner side of the convex portion and is arranged to be inclined upward toward the convex portion.
  • a protruding portion of the uneven part which protrudes from a surface of the trailing edge and a recessed portion of the uneven part which is recessed from the surface of the trailing edge may be alternately arranged and the recessed portion may be located closest to the convex portion.
  • the protruding portion may have a convex shape to have a preset curvature.
  • the protruding portion may have a polygonal shape.
  • the convex portion has a convex shape to have a preset curvature and protrudes backward rather than the uneven part with respect to the rotational direction.
  • An outer end of the tail wing part may be located in an end portion of the wing.
  • an air conditioner is provided as defined in the appended claims.
  • the wing may further include a tail wing part formed in an end portion of a trailing edge of the wing and the convex portion may be provided in the tail wing part.
  • the blower fan may further include a hub coupled to a driving shaft and configured to receive rotation force.
  • the plurality of wings may be arranged along a circumference of the hub.
  • a position P1 of the tail wing part may be located in a section 0.85 ⁇ D ⁇ P1 ⁇ D on the basis of a maximum straight distance D of the wing from a center C of the hub.
  • a position P2 of the uneven part may be located in a section 0.5 ⁇ D ⁇ P2 ⁇ 0.9 ⁇ D.
  • the uneven part may be located from an inner end of the tail wing part toward the center C of the hub by an interval of 0.01 ⁇ D or less.
  • the tail wing part may have an inclined portion which is coupled to an inner side of the convex portion and is arranged to be inclined upward toward the convex portion.
  • a protruding portion of the uneven part which protrudes from a surface of the trailing edge and a recessed portion of the uneven part which is recessed from the surface of the trailing edge may be alternately arranged and the recessed portion may be located closest to the convex portion.
  • the protruding portion may have a convex shape to have a preset curvature.
  • the protruding portion may have a polygonal shape.
  • an air conditioner may include a blower fan configured to cool a refrigerant.
  • the blower fan may have a plurality of wings.
  • Each of the plurality of wings may include an uneven part formed at a trailing edge which is a rear edge portion of the wing with respect to a rotational direction thereof; and a convex portion formed on an outer side of the uneven part and having a preset curvature to protrude from the uneven part.
  • FIGS. 1 to 10 The embodiments described herein will be exemplarily described based on embodiments most suitable to understand technical features of the present invention. It is understood that the technical features of the present invention are not limited by the embodiments described herein but are illustrated to implement the present invention like the embodiments described herein.
  • FIG. 1 is a schematic diagram illustrating an air conditioner according to an embodiment of the present invention.
  • an air conditioner 100 includes an indoor unit 10 and an outdoor unit 20.
  • the indoor unit 10 and the outdoor unit 20 may be coupled to a coupling pipe 30.
  • the coupling pipe 30 may include a refrigerant supply pipe 40 and a refrigerant discharge pipe 50.
  • the refrigerant may circulate in a refrigerant tube (not shown) provided in the indoor unit 10 and a refrigerant tube (not shown) provided in the outdoor unit 20 through the coupling pipe 30.
  • the indoor unit 10 may maintain the indoor temperature to an appropriate temperature by discharging the air heat-exchanged with the refrigerant compressed and condensed in the outdoor unit 20 to the room.
  • the indoor unit 10 may include an expansion value and an evaporator. The indoor air may be cooled through the refrigerant evaporated in the evaporator.
  • the outdoor unit 20 may include a compressor, a condenser, and a blower fan 200.
  • An air inlet through which external air flows in or flows out may be formed in one side of the outdoor unit 20.
  • the compressor compresses the refrigerant and the compressed refrigerant flows and is condensed in the condenser.
  • the blower fan 200 may be driven and the heat generated in the condenser may be cooled through the external air flowing through the air inlet and then discharged to the outside of the outdoor unit 20 again through the blower fan 200.
  • a propeller fan may be used as the blower fan 200 of the outdoor unit 20.
  • the blower fan 200 may be used in the outdoor unit 20 of the air conditioner 100 and the like and may allow the air to forcibly flow by a difference between pressures in the front and rear of the blower fan.
  • FIG. 2 is a perspective view illustrating a figure of a blower fan according to an embodiment of the present invention
  • FIG. 3 is a front view illustrating a figure of a blower fan according to an embodiment of the present invention.
  • FIG. 4 is an enlarged view illustrating an A portion of the blower fan illustrated in FIG. 3 .
  • the blower fan 200 according to an embodiment of the present invention includes a hub 110 and a plurality of wings 120.
  • a shaft (not shown) of a driving member may be coupled to the hub 110.
  • the hub 110 is firmly coupled to the shaft of the driving member through a screw fastening structure and the like and receives rotational force from the shaft. Accordingly, the blower fan 200 may be rotated through the driving force of the driving member.
  • the driving member may be a driving motor.
  • the wings 120 may be radically arranged in a circumference of the hub 110 at intervals.
  • the plurality of wings 120 may be provided in the same shape.
  • Each of the wings 120 may be provided to have a gentle slope so as to blow the air in the rear of the blower fan 200 to a forward direction along an axis direction.
  • the wing 120 may include a trailing edge 121 and a leading edge 122.
  • the leading edge 122 refers to a front edge portion with respect to a rotational direction (a clockwise direction on the basis of FIG. 3 ) of the wing 120 and the trailing edge 121 refers to a rear edge portion with respect to the rotational direction of the wing 120.
  • the leading edges 122 and the trailing edges 121 of the wings may be arranged close to each other to face each other.
  • the air flowing into a wing 120 side through the leading edge 122 according to the rotation of the blower fan 200 flows along the front surface of the wing 120 and is discharged from the trailing edge 121.
  • the wing 120 may be provided to have a gentle slope toward the front of the blower fan 200 from the leading edge 122 toward the trailing edge 121. Accordingly, in response to the rotation of the blower fan 200, the air flowing into the leading edge 122 may flow along the front surface of the wing 120 inclined toward the front of the blower fan 200 and thus the air may be blown along the axis direction of the blower fan 200 from the rear of the blower fan 200 to the front thereof.
  • the trailing edge 121 may have an uneven part 130 and a tail wing part 140.
  • the uneven part 130 may have a protruding portion 131 and a recessed portion 132 so that the trailing edge 121 is curved.
  • the protruding portion 131 and the recessed portion 132 are alternately arranged so that the uneven part 130 may have a curved shape.
  • the protruding portion 131 may have a crest shape of a wave and the recessed portion 132 may have a trough shape of the wave. Accordingly, the uneven part 130 may have a wave shape having the crest and trough periodically.
  • the protruding portion 131 and the recessed portion 132 may have a preset curvature.
  • the protruding portion 131 protrudes from a surface of the trailing edge 121 and the recessed portion 132 may be recessed from the surface of the trailing edge 121.
  • a position P2 of the uneven part 130 may be located in a section 0.5 ⁇ D ⁇ P2 ⁇ 0.9 ⁇ D on the basis of a distance (hereinafter, referred to as maximum straight distance D) from the center C of the hub 110 to an end portion of the wing 120.
  • the position P2 of the uneven part 130 means that the uneven part 130 may be located in the section 0.5 ⁇ D ⁇ P2 ⁇ 0.9 ⁇ D in the distance D from the center C of the hub 110 to the end portion of the wing 120 and the position P2 of the uneven part 130 may correspond to a length of the uneven part 130.
  • a width of the uneven part 130 in the position P2 may be flexibly changed within the section 0.5 ⁇ D ⁇ P2 ⁇ 0.9 ⁇ D.
  • the tail wing part 140 may be located in the outer side of the uneven part 130 and have an inclined portion 141 and a convex portion 142.
  • the convex portion 142 is formed in the outer side of the uneven part 130.
  • the convex portion 142 is arranged in the outer side of the uneven part 130 and has a protruding shape from the trailing edge 121.
  • the convex portion 142 may have a preset curvature to protrude toward a rear side with respect to the rotational direction of the blower fan 200 and a front end of the convex portion 142 may be formed higher than a front end of the protruding portion 131.
  • the inclined portion 141 is coupled to an inner side of the convex portion 142 and is coupled to be inclined upward toward the convex portion 142. Although the inclined portion 141 is illustrated in a linear shape, the inclined portion 141 may have a curved form to be inclined upward toward the convex portion 142. A position P1 of the tail wing part 140 may be located in a section 0.85 ⁇ D ⁇ P1 ⁇ D on the basis of the maximum straight distance D.
  • the position P1 of the tail wing part 140 means that the tail wing part 140 may be located in the section 0.85 ⁇ D ⁇ P1 ⁇ D in the distance D from the center C of the hub 110 to the end portion of the wing 120.
  • the outer end of the tail wing part 140 may be arranged in the end portion of the wing 120.
  • the width of the tail wing part 140 may have the largest width in response to the inner end of the tail wing part 140 being arranged in 0.85 ⁇ D.
  • the width of the tail wing part 140 may be 0.15 ⁇ D.
  • the width of the tail wing part 140 may be flexibly changed.
  • the uneven part 130 may be formed from an inner side of the tail wing part 140 (or inclined portion 141) toward the center C of the hub 110 and a pitch of the uneven part 130 may be located to have an interval d of 0.01 ⁇ D or less on the basis of the maximum straight distance D.
  • the protruding portion 131 may protrude to a present height h from the surface of the trailing edge 121.
  • FIG. 5 is a diagram illustrating a comparison between a magnitude of noise to an air volume in a blower fan according to an embodiment of the present invention and a magnitude of noise to an air volume in a blower fan (in which an uneven part and a tail wing part are not included) in the related art
  • FIG. 6 is a diagram illustrating a comparison between a value of power consumption to an air volume in a blower fan according to an embodiment of the present invention and a value of power consumption to an air volume in a blower fan (in which an uneven part and a tail wing part are not included) in the related art.
  • the blower fan 200 according to an embodiment of the present invention has an effect that the noise of about 1dBA is reduced under the same air volume condition as compared with a blower fan in the related art.
  • the blower fan 200 according to an embodiment of the present invention has an effect that the power consumption of about 3W is reduced under the same air volume condition as compared with a blower fan in the related art.
  • the mixing action of the flow of a pressure surface and the flow of a negative pressure surface may be increased by forming the uneven part 130 and the tail wing part 140 in the wing 120 and thus the counter current strength of the counter current region and the counter current region in a slipstream may be reduced.
  • the power consumption of the blower fan 200 may be reduced and the noise which may be generated in air suction and discharge process may be reduced and thus the satisfaction of the user may be improved.
  • the uneven part 130 and the tail wing part 140 may be provided to correspond to each wing 120.
  • a shape, a size, the number of uneven parts 130 and the like are not limited thereto and may be changed according to the structure and shape of the applied blower fan 200.
  • the shapes of the plurality of protruding portions 131 and recessed portions 132 constituting the uneven part 130 may be differently formed from each other.
  • the height of the protruding portion 131 close to the hub 110 may be formed larger than the protruding portion 131 close to the tail wing part 140.
  • FIG. 7 is a diagram illustrating a modified example of the wing illustrated in FIG. 4
  • FIG. 8 is a diagram illustrating another modified example of the wing illustrated in FIG. 4 .
  • uneven parts 130A and 130B may have a polygonal shape.
  • a protruding portion 131A may have a triangular shape.
  • the protruding portion 131A may have an equilateral triangular shape or an isosceles triangular shape of which a cross-sectional area is constantly reduced upward.
  • the protruding portions 131A may be continuously arranged at intervals and the recessed portions 132A may be formed between the protrusion portions 131A.
  • the protruding portions 131A and the recessed portions 132A may have a symmetrical shape with each other with respect to the surface of the trailing edge 121.
  • the protruding portion 131A may be provided to protrude from the trailing edge 121 and the recessed portion 132A may be provided to be recessed from the trailing edge 121.
  • the protruding portion 131B may have a trapezoidal shape of which a cross-sectional area is constantly reduced upward.
  • the protruding portions 131B may be continuously arranged at intervals and the recessed portions 132B may be formed between the protrusion portions 131B.
  • the protruding portions 131B and the recessed portions 132B may have a symmetrical shape with each other with respect to the surface of the trailing edge 121.
  • the protruding portion 131B may be provided to protrude from the trailing edge 121 and the recessed portion 132B may be provided to be recessed from the trailing edge 121.
  • FIG. 9 is a front view illustrating a blower fan according to another embodiment of the present invention and FIG. 10 is an enlarged diagram illustrating a B portion of the blower fan illustrated in FIG. 9 .
  • a protruding portion 131C protrudes the surface of the trailing edge 121 and a recessed portion 132C is recessed from the surface of the trailing edge 121.
  • a position P2' of an uneven part 130C may be located in a section 0.5 ⁇ D ⁇ P2' ⁇ 0.9 ⁇ D on the basis of the maximum straight distance D.
  • a tail wing part 140A may have an inclined portion 141A and a convex portion 142A.
  • the convex portion 142A is formed in the outer side of the uneven part 130C.
  • the convex portion 142A is arranged on the outer side of the uneven part 130C and has a protruding shape from the trailing edge 121.
  • the convex portion 142A may have a preset curvature to protrude toward a rear side with respect to the rotational direction of the blower fan 200 and a front end of the convex portion 142A may be formed higher than a front end of the protruding portion 131C.
  • the inclined portion 141A is coupled to an inner side of the convex portion 142A and is arranged to be inclined upward toward the convex portion 142A.
  • a position P1' of the of the tail wing part 140A may be located in a section 0.85 ⁇ D ⁇ P1' ⁇ D on the basis of the maximum straight distance D.
  • the uneven part 130C may be formed on the tail wing part 140A.
  • the position P1' of the tail wing part 140A means that the tail wing part 140A may be located in the section 0.85 ⁇ D ⁇ P1' ⁇ D in the distance D from the center C of the hub 110 to an end portion of a wing 120C.
  • the outer end of the tail wing part 140A may be the end portion of the wing 120C.
  • the width of the tail wing part 140A may have the largest width in response to the inner end of the tail wing part 140A being arranged in 0.85 ⁇ D. In response to an inner portion of the tail wing part 140A being located in a section between 0.85 ⁇ D and D, the width of the tail wing part 140A may be flexibly changed.
  • the position P2' of the uneven part 130C means that the uneven part 130C may be located in the section 0.5 ⁇ D ⁇ P2' ⁇ 0.9 ⁇ D in the distance D from the center C of the hub 110 to the edge portion of the wing 120C.
  • the width of the uneven part 130C may be flexibly changed in the section 0.5 ⁇ D ⁇ P2' ⁇ 0.9 ⁇ D.
  • the position P2' of the uneven part 130C may be formed in 0.5 ⁇ D ⁇ P2' ⁇ 0.89 ⁇ D.
  • the position P2' of the uneven part 130C may be formed to partially overlap the position P1' of the tail wing part 140A (0.86 ⁇ D ⁇ P1' ⁇ P2' ⁇ 0.89 ⁇ D).
  • the uneven part 130C may be formed on the inclined portion 141A.
  • the blower fan 200 can mix the flow of the pressure surface and the flow of the negative pressure surface near the uneven part 130, the blower fan 200 may effectively reduce the strength and region of the counter current which may be generated in the discharged air.
  • the blower fan can simultaneously reduce the noise and power consumption through control of the generation of the counter current.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (10)

  1. Luftgebläse (200), umfassend:
    eine Nabe (110), die an ein Antriebselement gekoppelt und dazu ausgestaltet ist, Drehkraft aufzunehmen; und
    eine Mehrzahl von Flügeln (120, 120A, 120B, 120C), die radial entlang einem Umfang der Nabe (110) angeordnet sind,
    wobei jeder der Mehrzahl von Flügeln (120, 120A, 120B, 120C) umfasst:
    einen unebenen Teil (130, 130A, 130B, 130C), der an einer Abströmkante (121) ausgebildet ist, die ein hinterer Kantenabschnitt des Flügels (120, 120A, 120B, 120C) bezogen auf eine Drehrichtung desselben ist, wobei der unebene Teil (130, 130A, 130B, 130C) eine Mehrzahl hervorragender Abschnitte (131, 131A, 131B, 131C), die von einer Oberfläche der Abströmkante (121) aus hervorragen, und eine Mehrzahl vertiefter Abschnitte (132, 132A, 132B, 132C), die von der Oberfläche der Abströmkante (121) aus vertieft sind, umfasst; und
    einen an der Abströmkante (121) ausgebildeten Heckflügelteil (140, 140A), der einen konvexen Abschnitt (142, 142A) mit einer konvexen Form aufweist, so dass er eine vorgegebene Krümmung aufweist, die an einer äußeren Seite des unebenen Teils (130, 130A, 130B, 130C) ausgebildet ist,
    wobei der konvexe Abschnitt (142, 142A) weiter nach hinten ragt als die hervorragenden Abschnitte (131, 131A, 131B, 131C) des unebenen Teils (130, 130A, 130B, 130C) bezogen auf die Drehrichtung des Luftgebläses (200),
    dadurch gekennzeichnet, dass
    die Mehrzahl hervorragender Abschnitte (131, 131A, 131B, 131C) und die Mehrzahl vertiefter Abschnitte (132, 132A, 132B, 132C) abwechselnd angeordnet sind, die Mehrzahl hervorragender Abschnitte (131, 131A, 131B, 131C) eine gleich große Form aufweisen und die Mehrzahl vertiefter Abschnitte (132, 132A, 132B, 132C) eine gleich große Form aufweisen und die Mehrzahl hervorragender Abschnitte (131, 131A, 131B, 131C) und die Mehrzahl vertiefter Abschnitte (132, 132A, 132B, 132C) bezogen auf die Oberfläche der Abströmkante (121) eine zueinander symmetrische Form aufweisen.
  2. Luftgebläse (200) nach Anspruch 1, wobei eine Position P1 des Heckflügelteils (140, 140A) sich in einem Bereich 0,85∗D≤P1≤D auf der Basis einer maximalen geraden Entfernung (D) von einem Mittelpunkt (C) der Nabe (110) zu einem Endabschnitt des Flügels (120, 120A, 120B, 120C) befindet.
  3. Luftgebläse (200) nach Anspruch 2, wobei eine Position P2 des unebenen Teils (130, 130A, 130B, 130C) sich in dem Bereich 0,5∗D≤P2≤0,9∗D befindet.
  4. Luftgebläse (200) nach Anspruch 3, wobei der unebene Teil (130, 130A, 130B, 130C) sich um ein Intervall von 0,01∗D oder weniger weg von einem inneren Ende des Heckflügelteils (140, 140A) zu dem Mittelpunkt (C) der Nabe (110) hin befindet.
  5. Luftgebläse nach Anspruch 1, wobei der Heckflügelteil einen geneigten Abschnitt aufweist, der an eine Innenseite des konvexen Abschnittes gekoppelt und so angeordnet ist, dass er nach oben zu dem konvexen Abschnitt hin geneigt ist.
  6. Luftgebläse (200) nach Anspruch 1, wobei der hervorragende Abschnitt (131, 13k1A, 131B, 131C) des unebenen Teils (130, 130A, 130B, 130C), der von einer Oberfläche der Abströmkante (121) hervorragt, und der vertiefte Abschnitt (132, 132A, 132B, 132C) des unebenen Teils (130, 130A, 130B, 130C), der von der Oberfläche der Abströmkante (121) aus vertieft ist, abwechselnd angeordnet sind und der vertiefte Abschnitt (132, 132A, 132B, 132C) sich am nächsten an dem konvexen Abschnitt (142, 142A) befindet.
  7. Luftgebläse (200) nach Anspruch 6, wobei der hervorragende Abschnitt (131, 131A, 131B, 131C) eine konvexe Form mit einer vorgegebenen Krümmung aufweist.
  8. Luftgebläse (200) nach Anspruch 6, wobei der hervorragende Abschnitt (131, 131A, 131B, 131C) eine vieleckige Form aufweist.
  9. Luftgebläse (200) nach Anspruch 2, wobei ein äußeres Ende des Heckflügelteils (140, 140A) sich in dem Endabschnitt des Flügels (120, 120A, 120B, 120C) befindet.
  10. Klimaanlage, umfassend:
    ein Luftgebläse (200) nach einem der Ansprüche 1-9, wobei das Luftgebläse (20) dazu ausgestaltet ist, ein Kältemittel zu kühlen.
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US11041506B2 (en) 2021-06-22
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CN108291559B (zh) 2021-07-13
WO2017095029A1 (ko) 2017-06-08
CN108291559A (zh) 2018-07-17
EP3343045A1 (de) 2018-07-04
US20180355885A1 (en) 2018-12-13
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